SIMCRT: Saving to cartridges

[sy2002]

This would be a collaboration project because it needs The Shell to be able to save data per cartridge plus it would need some additional work in the CRT simulation. At this moment (4/25/23) I would classify this as an enhancement for a later Version 6, not for the currently WIP Version 5 - but let's see how it goes:

These games are known for not being able to save to simulated cartridges:

Sam's Journey cannot save to cartridge
Eye of the Beholder
Briley Witch Chronicles (v1.0).crt                                 => Trying to save to cart will fail (handled by the game)
Briley Witch Chronicles (v1.0.6).crt                               => Trying to save to cart will fail (handled by the game)